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US3963779A
Expired / Lapsed
US
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Novel organic photoconductive compound
Assignee: Mitsubishi Paper Mills Ltd
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Filing: 1972-09-05
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Granted: 1976-06-15
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Expires: 1992-09-05
Abstract
Abstract A novel organic photoconductive compound having the general formula, WHEREIN R1 is an alkyl group having 1-11 carbon atoms, R2 is hydrogen, methyl, nitro or a halogen and n and m are integers of 1 or 2 and may be the same or different, can provide extremely highly sensitive and inexpensive elecrophotographic material.
Inventors
- 👤 Hirokazu Tsukahara
- 👤 Kazuhiro Emoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:43
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/06; G03G5/0601; G03G5/0612; G03G5/0614; G03G5/06142; G03G5/06144
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
53 words
A novel photoconductive compound having the general formula, ##SPC5## wherein R 1 is an alkyl group having 1-11 carbon atoms, R 2 is a member selected from the group consisting of hydrogen, methyl, nitro and halogens and n and m are integers of 1 or 2 and may be the same or different.
Claim 2
Dependent Claim
53 words
A novel photoconductive compound having the general formula, ##SPC5## wherein R 1 is an alkyl group having 1-11 carbon atoms, R 2 is a member selected from the group consisting of hydrogen, methyl, nitro and halogens and n and m are integers of 1 or 2 and may be the same or different.
Claim 3
Dependent Claim
11 words
A compound according to claim 1 wherein R 2 is hydrogen.
Claim 4
Dependent Claim
11 words
A compound according to claim 1 wherein R 2 is halogen.
Claim 5
Dependent Claim
13 words
A compound according to claim 3 wherein the halogen is chlorine or bromine.
Claim 6
Dependent Claim
11 words
A compound according to claim 1 wherein R 2 is nitro.
Claim 7
Dependent Claim
11 words
A compound according to claim 1 wherein R 2 is methyl.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-06-15 | 1979-12-15 | 1980-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-15 | 1983-12-15 | 1984-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-15 | 1987-12-15 | 1988-06-15 | $7700.00 | Window Closed / Lapsed |